Authentic Juniper Certification Exam JN0-649 Questions Answers

PIM SSM introduces new terms for many of the concepts in PIM sparse mode. PIM SSM can technically be used in the entire 224/4 multicast address range, although PIM SSM operation is guaranteed only in the 232/8 range (232.0.0/24 is reserved). The new SSM terms are appropriate for Internet video applications and are summarized in Table 1.https://www.juniper.net/documentation/us/en/software/junos/multicast/topics/concept/multicast-pim-ssm.html

Cisco explains it better: The EVPN control plane advertises the following types of information:

Route type 1 – This is an Ethernet Auto-Discovery (EAD) route type used to advertise Ethernet segment identifier, Ethernet Tag ID, and EVPN instance information. EAD route advertisements may be sent for each EVPN instance or for each Ethernet segment.

Route type 2 – This advertises endpoint reachability information, including MAC and IP addresses of the endpoints or VTEPs.

Route type 3 – This performs multicast router advertisement, announcing the capability and intention to use ingress replication for specific VNIs.

Route type 4 – This is an Ethernet Segment route used to advertise the Ethernet segment identifier, IP address length, and the originating router's IP address.

Route type 5 – This is an IP prefix route used to advertise internal IP subnet and externally learned routes to a VXLAN network.

BGP Path Selection process follows this order

1.Weight (Bigger is better)

2. Local preference (Bigger is better)

3. Self originated (Locally injected is better than iBGP/eBGP learned)

4. AS-Path (Smaller is better)

5. Origin

6. MED (Smaller is better)

7. External (Prefer eBGP over iBGP)

8. IGP cost (Smaller is better)

9. EBGP Peering (Older is better)

10. Router- ID

http://www.next-itsolutions.co.uk/wp-content/uploads/2015/09/CCIE-BGP-Best-Path-Selection1.png

https://www.juniper.net/documentation/us/en/software/junos/vpn-l2/bgp/topics/concept/routing-protocols-address-representation.html